Absorption core and preparation method of absorption core

Abstract

The invention discloses an absorption core and a preparation method of the absorption core. The absorption core comprises an upper layer spunbond nonwoven, a lower layer spunlace nonwoven and an absorption layer arranged between the two layers of the nonwovens, wherein the absorption layer consists of a high-water-absorption resin column and a super water absorbent fiber column which are arrangedalternatively; the part corresponding to the high-water-absorption resin column, on the upper layer nonwoven is a water repellency treatment column, and the part corresponding to the super water absorbent fiber column is the hydrophilic treatment column; and on the lower layer nonwoven, at least the part corresponding to the high water absorption resin column is a hydrophilic treatment column, andthe part corresponding to the super water absorbent fiber column is the water repellency treatment column. Hydrophilic treatment and water repellency treatment are performed alternatively, liquid infiltration can be guaranteed, the hydrophilic area can be reduced, and reverse osmosis is reduced. Because liquid is uniformly distributed in the absorption core, emergence of local nuggets can be avoided, and high softness can be obtained.

Description

technical field [0001] The invention relates to an absorbent core and a method for making the absorbent core Background technique [0002] Thus, the amount of fluid that the absorbent core can absorb is determined by the amount of absorbent material. However, in this structure, since the absorbent material is usually only distributed between the surface layer and the middle layer and between the bottom layer and the middle layer, the distribution amount of the absorbent material is relatively limited, which is one of the disadvantages. The second disadvantage is that after the absorbent material absorbs a large amount of liquid, it often causes separation between the top layer or bottom layer and the middle layer, and a large amount of absorbent material will escape from the sides of the absorbent core. [0003] The absorbent core is the most critical and important part of a disposable absorbent product. The performance of disposable absorbent articles, such as water absor...

AI Technical Summary

Problems solved by technology

[0008] (1) The sandwich type can easily cause gel adhesion and hard spots after the polymer superabsorbent resin absorbs water, and even cause interlayer sliding;

[0009] (2) The uniform mixing of water-absorbent fiber and polymer superabsorbent resin will cause the loss of polymer superabsorbent resin during the production process, and a considerable part of it will remain on the forming mesh belt, which will cause waste of polymer superabsorbent resin on the one hand. , increase the production cost; on the other hand, it causes the polymer superabsorbent resin to block the mesh of the forming mesh belt, which not only affects the forming of the absorbent core, but also brings certain difficulties to the cleaning of the mesh belt

[0010] (3) Most of the above two molding devices complete the mixing of water-absorbing fiber and polymer superabsorbent resin in the same fiber cavity, and the formed absorbent core can only be one type of water-absorbing fiber. When absorbing a large amount of liquid, it will appear Too late to absorb phenomenon

Images